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Multiplication: [ (a+bi) × (a+bi) ]
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Division: [ (a+bi) / (a+bi) ]
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Square root: [ r1 = x+yi ; r2 = -x-yi ]
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The form like a + bi is a complex number, where i is the imaginary unit and a and b are real numbers. So complex number has real part of a and the imaginary part of b. The online complex operation calculator provides Multiplication Division Square root operation.
Division = (a+bi) / (a+bi)
Multiplication = (a+bi) × (a+bi)
Square root:
x = b / 2y
y = sqrt((r-a) / 2)
r = sqrt(a^2 + b^2)
r1 = x + yi
r2 = -x - yi